USDA Plant Hardiness Zone Map | American Horticultural Society #1829467 (License: Personal Use)

This authoritative map, published by the American Horticultural Society, illustrates the United States’ plant hardiness zones using a color-coded system reflecting average annual extreme minimum temperatures. Each zone represents a 10°F range, further subdivided into 5°F half-zones (e.g., 7a, 7b), helping gardeners and landscapers select perennials, trees, and shrubs suited to local climate conditions. Alaska, Hawaii, and Puerto Rico are included with separate insets for accurate regional representation.

Used on gardening, landscaping, and agricultural websites; commonly embedded in planting guides, nursery product pages, and extension service resources. Matches user intent for finding suitable plants by location, planning seasonal gardens, or verifying frost dates and climate suitability.